/* Primitive.java * * Copyright (c) 2000, Ted Nelson and Tuomas Lukka * Copyright (c) 2000-2001, Benjamin Fallenstein * * You may use and distribute under the terms of either the GNU Lesser * General Public License, either version 2 of the license or, * at your choice, any later version. Alternatively, you may use and * distribute under the terms of the XPL. * * See the LICENSE.lgpl and LICENSE.xpl files for the specific terms of * the licenses. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the README * file for more details. * */ /* * Written by Benjamin Fallenstein */ package org.zaubertrank; import org.gzigzag.*; /** A primitive for use in the zaubertrank. */ public abstract class Primitive { String rcsid = "$Id: Primitive.java,v 1.1 2002/10/07 12:37:35 tuukkah Exp $"; // In subclasses, override one of the following two: protected Object eval(Data params) { return null; } public Object eval(Data params, ZZSpace space) { return eval(params); } public abstract int args(); }